Home / 21,857.45-32,779.77-8,527.47

Finding the Fourth Proportional to 21,857.45, 32,779.77 and 8,527.47

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Solution

The fourth proportional to 21,857.45, 32,779.77 and 8,527.47 is: 12,788.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,857.45 : 32,779.77 = 8,527.47 : x
  2. Step 2: Convert to fraction form
    21,857.45/32,779.77 = 8,527.47/x
  3. Step 3: Cross multiply
    21,857.45x = 32,779.77 × 8,527.47
  4. Step 4: Simplify right side
    21,857.45x = 279,528,505.28
  5. Step 5: Solve for x
    x = 279,528,505.28/21,857.45
  6. Step 6: Final answer
    x = 12,788.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.